#____________________________________________________________________________a single-cell battery gauge:BQ27427
set_property VCCAUX_IO DONTCARE [get_ports gauge_scl]
set_property IOSTANDARD LVCMOS33 [get_ports gauge_scl]
set_property PACKAGE_PIN M17 [get_ports gauge_scl]

set_property VCCAUX_IO DONTCARE [get_ports gauge_sda]
set_property IOSTANDARD LVCMOS33 [get_ports gauge_sda]
set_property PACKAGE_PIN M20 [get_ports gauge_sda]

set_property VCCAUX_IO DONTCARE [get_ports gauge_indicate]
set_property IOSTANDARD LVCMOS33 [get_ports gauge_indicate]
set_property PACKAGE_PIN K16 [get_ports gauge_indicate]

#____________________________________________________________________________power on/off
set_property VCCAUX_IO DONTCARE [get_ports power_on_rsh2116_a]
set_property IOSTANDARD LVCMOS33 [get_ports power_on_rsh2116_a]
set_property PACKAGE_PIN U15 [get_ports power_on_rsh2116_a]

set_property VCCAUX_IO DONTCARE [get_ports power_on_rsh2116_d]
set_property IOSTANDARD LVCMOS33 [get_ports power_on_rsh2116_d]
set_property PACKAGE_PIN W15 [get_ports power_on_rsh2116_d]

set_property VCCAUX_IO DONTCARE [get_ports power_on_ads1299]
set_property IOSTANDARD LVCMOS33 [get_ports power_on_ads1299]
set_property PACKAGE_PIN P15 [get_ports power_on_ads1299]

set_property VCCAUX_IO DONTCARE [get_ports power_on_z]
set_property IOSTANDARD LVCMOS33 [get_ports power_on_z]
set_property PACKAGE_PIN L19 [get_ports power_on_z]

set_property VCCAUX_IO DONTCARE [get_ports power_sw_z]
set_property IOSTANDARD LVCMOS33 [get_ports power_sw_z]
set_property PACKAGE_PIN D19 [get_ports power_sw_z]